ESP8266 Community Forum

- Thu Mar 05, 2015 2:47 pm #11392

so use 255,255,255 but dim it to say 50%.Mike

And how is this in your imagination different from sending 128,128,128? Each WS2812B LED contains a controller which dims the LED's brighness (using PWM at about 400 Hz IIRC) to the values you sent them, so that you don't have to.

- Thu Mar 05, 2015 4:18 pm #11403 Hi Markus Gritsch ,

I'm new to RGB lights so maybe I'm overthinking this but I thought 128,128,128 gives a hex value of 808080 which is gray (according to an RGB color pallet). I wanted white light (255,255,255) but dimmed. But from what you're telling me, 128,128,128 is white but 50% intensity is that correct?

Thank you,

Mike

- Thu Mar 05, 2015 4:49 pm #11408 Yes. Gray is white at alower intensity. Black is white at zero intensity. There is no such thing as "black on 100 % intensity" which you wrote in a previous posting. And this is not special to RGB LEDs -- it is the same for all additive color mixing, like done by the thing you are looking at to read this text.

- Thu Mar 05, 2015 5:23 pm #11410 Understood, Thank you again to eveyone who helped

Mike